US 12,295,184 B2
Disconnection of a string carrying direct current power
Liron Har-Shai, Tel Mond (IL); Alon Zohar, Netanya (IL); Yoav Galin, Raanana (IL); and Meir Adest, Modiin (IL)
Assigned to Solaredge Technologies Ltd., Herzeliya (IL)
Filed by Solaredge Technologies Ltd., Herzeliya (IL)
Filed on Jun. 13, 2017, as Appl. No. 15/621,544.
Application 15/621,544 is a continuation of application No. 15/076,887, filed on Mar. 22, 2016, granted, now 9,935,458.
Application 15/076,887 is a continuation of application No. 13/315,754, filed on Dec. 9, 2011, granted, now 9,401,599, issued on Jul. 26, 2016.
Claims priority of application No. 1020862 (GB), filed on Dec. 9, 2010.
Prior Publication US 2017/0279265 A1, Sep. 28, 2017
Int. Cl. H02J 1/00 (2006.01); H01L 31/02 (2006.01); H02H 3/16 (2006.01); H02H 3/33 (2006.01); H02H 7/20 (2006.01); H02J 3/38 (2006.01); H02J 3/46 (2006.01); H10F 77/00 (2025.01)
CPC H10F 77/955 (2025.01) [H02H 7/20 (2013.01); H02J 3/46 (2013.01); H02H 3/16 (2013.01); H02H 3/33 (2013.01); H02J 3/381 (2013.01); H02J 2300/24 (2020.01); Y02E 10/56 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method, comprising:
determining a differential current in a power generating string, wherein the differential current is a difference between two points on the power generating string;
assessing a presence of current leakage between the two points based on the differential current; and
repeating the steps of determining and assessing,
wherein the power generating string comprises at least two substrings and at least one string converter established as part of each of the at least two substrings,
wherein the differential current comprises a difference between converter inputs, and
wherein the differential current is for a serially connected solar module nearest to a lower potential rail and is determined from measurements of a positive converter input current, a positive converter output current, a converter input voltage, and a converter output voltage.